GCC 4.8 compiles on Illumos.

- Disable profiled bootstrap.
- Add illumos meta platform.
Nix 1.7-pre3559, so far the best working version 
on Illumos/Solaris since 1.4
Update coreutils to version 8.22

Patch seems no longer required.
Pre-configure replace #!/bin/sh with known path
to Bash.

On Illumos/Solaris, the default shell for /bin/sh
is KSH. Unfortunately most configure and libtool
scripts are incompatible with this shell
(syntax errors, unknown commands like print, ...).

Also tail seems to be picky about the space after
-c when compiled by Nix on Illumos (no idea why).
Fix bison build on Illumos.
Patch ncurses for GCC 4.8 again...
Fix libelf build on Illumos
Update glib to 2.40

Patch is no longer required for Illumos!